Power Supplies - the difference between switch mode and linear.

There are considerable differences between linear and switch mode power supplies.

We stock both designs in our bench power supply range. Here is a handy table to provide you with an overview of the main differences:

 

Linear

Switching / Switch mode

 Strengths Low noise and EMC disturbances

Good line and load regulation

Fast transient response

Can produce very low current output

High efficiency (75% average with some around 95%)

More affordable for higher power

Lighter weight

Can't supply low voltages and

needs to supply a minimum current

 

 

Weaknesses

 

Low efficiency (30-40% average)

Weight (transformer)

Larger heat sinks

More expensive for higher power

 

 

More noise (including impulse noise and EMC disturbances)

Much slower transient response compared with linear

If you have any questions about our power supply range, please feel free to call or email us.

 

 

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